Gate Driving Circuit Transistor Reduction for Narrow Side Frames
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display panels have a large side frame due to the significant space occupied by transistors in the gate driving circuit, which cannot meet the demand for a narrow side frame.
Innovation Solution
The gate driving circuit is redesigned to reduce the number of transistors by incorporating an inverter in the pull-down maintaining circuit, which includes a first, second, and third transistor, and further reduces the number of signal output ends connected to the inverter, thereby minimizing the overall transistor count and signal output ends in the pull-down maintaining circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional gate driving circuit components (pull-up control circuit, pull up circuit, pull down circuit, bootstrap capacitor, signal transmission circuit) are implemented to ensure waveform accuracy, then the gate output voltage waveform accuracy is improved, but the number of transistors increases and the occupied space becomes huge
Solution Approach 1:
The patent combines multiple functions into integrated circuit blocks. The pull-up control circuit integrates the bootstrap capacitor and control logic, the signal transmission circuit merges buffering and transmission functions, and the pull-down maintaining circuit combines maintaining and control functions. This merging reduces the total transistor count from what would be required if each component were implemented separately, thereby reducing occupied space while maintaining waveform accuracy.
Solution Approach 2:
The gate driving circuit implements multi-functionality within each circuit block. The pull-up control circuit serves both as a control unit and includes the bootstrap capacitor function. The signal transmission circuit provides both buffering and signal transmission. The pull-down maintaining circuit handles both maintaining low voltage levels and controlling pull-down operations. This multi-functionality reduces the overall component count and transistor number, decreasing occupied space.
2Area of stationary object
If the number of transistors in the gate driving circuit is reduced to decrease occupied space, then the side frame size is reduced, but the waveform accuracy and normal operation of the GOA circuit may be compromised
Solution Approach 1:
The patent extracts and eliminates redundant transistors and circuit elements from the conventional GOA circuit design. By carefully analyzing each circuit block's essential functions, unnecessary transistors are removed while retaining the core functionality required for normal operation and waveform accuracy. This extraction reduces the transistor count and occupied space without compromising reliability.
Solution Approach 2:
The patent optimizes circuit parameters such as transistor sizing, threshold voltages, and capacitor values to achieve reliable operation with fewer transistors. By adjusting these parameters, the circuit maintains its functional requirements and waveform accuracy while using a reduced number of components, thus reducing occupied space without sacrificing reliability.
Data Source
AI summary
A gate driving circuit and a display panel are provided. The gate driving circuit reduces the number of transistors through the inverter in the pull-down maintaining circuit such that the number of the signal output ends connected to the inverter is reduced. In this way, the number of the other transistors in the pull-down maintaining circuit is also reduced. Therefore, the number of the transistors and the number of the signal output ends of the pull-down maintaining circuit are both reduced. This means that the number of the transistors and the number of the signal output ends of the gate driving circuit are both reduced.